chore: switch to babel resource management transform (#780)

I noticed the resource management proposal was deprecated since there's
now a stable transform plugin available.

In order to avoid duplicating babel installs, this also updates the
other babel packages in the monorepo to match (so we have one copy).

Author: 43081j

docs/package.json

@@ -23,7 +23,7 @@
     "react-dom": "^18.2.0"
   },
   "devDependencies": {
-    "@babel/core": "^7.22.8",
+    "@babel/core": "^7.28.4",
     "@preact/preset-vite": "^2.3.0",
     "@types/react": "^18.0.18",
     "@types/react-dom": "^18.0.6",

karma.conf.js

@@ -185,7 +185,7 @@ function createEsbuildPlugin(filteredPkgList) {
 					];
 
 					const explicitResourceManagement = [
-						"@babel/plugin-proposal-explicit-resource-management",
+						"@babel/plugin-transform-explicit-resource-management",
 					];
 
 					const tmp = await babel.transformAsync(result, {

package.json

@@ -49,20 +49,20 @@
   ],
   "license": "MIT",
   "devDependencies": {
-    "@babel/core": "^7.27.7",
-    "@babel/plugin-proposal-explicit-resource-management": "^7.27.4",
+    "@babel/core": "^7.28.4",
+    "@babel/plugin-transform-explicit-resource-management": "^7.28.0",
     "@babel/plugin-syntax-jsx": "^7.27.1",
     "@babel/plugin-transform-modules-commonjs": "^7.27.1",
     "@babel/plugin-transform-react-jsx": "^7.27.1",
-    "@babel/plugin-transform-typescript": "^7.27.1",
-    "@babel/preset-env": "^7.27.2",
+    "@babel/plugin-transform-typescript": "^7.28.0",
+    "@babel/preset-env": "^7.28.3",
     "@babel/preset-react": "^7.27.1",
     "@babel/preset-typescript": "^7.27.1",
-    "@babel/register": "^7.27.1",
-    "@babel/standalone": "^7.27.7",
+    "@babel/register": "^7.28.3",
+    "@babel/standalone": "^7.28.4",
     "@changesets/changelog-github": "^0.5.0",
     "@changesets/cli": "^2.27.1",
-    "@types/babel__traverse": "^7.18.5",
+    "@types/babel__traverse": "^7.28.0",
     "@types/chai": "^4.3.3",
     "@types/mocha": "^9.1.1",
     "@types/node": "^18.19.103",

packages/preact-transform/package.json

@@ -45,18 +45,18 @@
     "prepublishOnly": "cd ../.. && pnpm build:preact-transform"
   },
   "dependencies": {
-    "@babel/helper-module-imports": "^7.22.5",
-    "@babel/helper-plugin-utils": "^7.22.5",
+    "@babel/helper-module-imports": "^7.27.1",
+    "@babel/helper-plugin-utils": "^7.27.1",
     "debug": "^4.3.4"
   },
   "peerDependencies": {
     "@babel/core": "^7.0.0"
   },
   "devDependencies": {
-    "@babel/core": "^7.22.8",
-    "@types/babel__core": "^7.20.1",
-    "@types/babel__helper-module-imports": "^7.18.0",
-    "@types/babel__helper-plugin-utils": "^7.10.0",
+    "@babel/core": "^7.28.4",
+    "@types/babel__core": "^7.20.5",
+    "@types/babel__helper-module-imports": "^7.18.3",
+    "@types/babel__helper-plugin-utils": "^7.10.3",
     "@types/debug": "^4.1.12",
     "@types/prettier": "^2.7.3",
     "assert": "^2.0.0",

packages/react-transform/package.json

@@ -45,8 +45,8 @@
     "prepublishOnly": "cd ../.. && pnpm build:react-transform"
   },
   "dependencies": {
-    "@babel/helper-module-imports": "^7.22.5",
-    "@babel/helper-plugin-utils": "^7.22.5",
+    "@babel/helper-module-imports": "^7.27.1",
+    "@babel/helper-plugin-utils": "^7.27.1",
     "@preact/signals-react": "workspace:^3.3.0",
     "debug": "^4.3.4",
     "use-sync-external-store": "^1.2.0"
@@ -56,10 +56,10 @@
     "react": "^16.14.0 || 17.x || 18.x || 19.x"
   },
   "devDependencies": {
-    "@babel/core": "^7.22.8",
-    "@types/babel__core": "^7.20.1",
-    "@types/babel__helper-module-imports": "^7.18.0",
-    "@types/babel__helper-plugin-utils": "^7.10.0",
+    "@babel/core": "^7.28.4",
+    "@types/babel__core": "^7.20.5",
+    "@types/babel__helper-module-imports": "^7.18.3",
+    "@types/babel__helper-plugin-utils": "^7.10.3",
     "@types/debug": "^4.1.12",
     "@types/prettier": "^2.7.3",
     "@types/react": "^18.0.18",

packages/react-transform/test/node/index.test.tsx

@@ -772,7 +772,7 @@ describe("React Signals Babel Transform", () => {
 			}
 
 			const state: VisitorState = {};
-			traverse(result.ast, programScopeVisitor, undefined, state);
+			traverse(result.ast!, programScopeVisitor, undefined, state);
 
 			const scope = state.programScope;
 			if (!scope) {